[PATCH] MOD of oxygen at pO2 of 1.6 is 20ft

David Tillotson david at acmelabs.co.uk
Sun Jul 5 15:25:41 PDT 2015

On 5 July 2015 23:19:52 BST, Linus Torvalds <torvalds at linux-foundation.org> wrote:
>On Sun, Jul 5, 2015 at 2:55 PM, Pedro Neves <nevesdiver at gmail.com>
>>> But do metric divers really prefer "21m/24m" to "20m/25m"?
>> I sure do...
>> .. but maybe that's just me...
>The metric  PADI tables do something odd, and go in two-meter
>increments from 10m to 22m, and then they switch to 5m increments
>(well, except for that least entry, which is at 42m).
>I'd guess that tech divers don't care too much about the PADI
>recreational tables, but presumably a lot of divers learnt to dive
>that way.
>Trying to find any metric dive plans with google and failing pretty
>badly. But the V-Planner FAQ seems to have examples that seem to be
>more along the lines of a mixture of  "round metric numbers, except at
>the shallower end".
>So it looks like there's not much of a real rule. I guess 3m is as
>good as anything.
>             Linus
>subsurface mailing list
>subsurface at subsurface-divelog.org

The BSAC 88 tables work in 3m increments, as do the tables that ScotSAC use IIRC. I guess most are a result of the original USN work.
David Tillotson
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